Synthesis, characterization and magnetic properties of Co@Au core-shell nanoparticles encapsulated by nitrogen-doped multiwall carbon nanotubes
Por:
Munoz-Sandoval E., Perea-Lopez N., Lima-Juarez R., Labrada-Delgado G.J., Rivera-Escoto B.A., Zamudio A., Silva-Pereyra H.G., Robles-Avila E., Terrones M.
Publicada:
1 oct 2014
Categoría:
Chemistry (miscellaneous)
Resumen:
Co/Au bilayer thin films were deposited on Si/SiOx substrates using the magnetron sputtering method and used as a catalytic support to grow forests of aligned nitrogen-doped multiwalled carbon nanotubes (N-MWCNT) via chemical vapor deposition (CVD) at 850 degrees C, using benzylamine (C6H5CH2NH2) as a carbon and nitrogen source. Interestingly, the resulting N-MWCNT contains Co@Au core-shell nanoparticles located at their tips. We found that the metal particle cores consist of cobalt coated by an Au shell of few nanometers. Magnetic measurements revealed a ferromagnetic behavior of the system composed of Co@Au nanoparticles encapsulated inside N-MWCNT. The results are compared with pristine N-MWNT containing only Co nanoparticles encapsulated in their cores. (C) 2014 Elsevier Ltd. All rights reserved.
Filiaciones:
Munoz-Sandoval E.:
Advanced Materials Division, IPICYT, Camino a la Presa San Jose 2055, San-Luis-Potosí 78216, Mexico
Perea-Lopez N.:
Department of Physics, Pennsylvania State University, University Park, PA 16802-6300, United States
Lima-Juarez R.:
Centro de Ciências Exatas e da Natureza, Universidade Federal de Pernambuco, Cidade Universitária, Av. Prof. Luiz Barros Freire, s/n, 50670-901 Recife, PE, Brazil
Labrada-Delgado G.J.:
Advanced Materials Division, IPICYT, Camino a la Presa San Jose 2055, San-Luis-Potosí 78216, Mexico
Rivera-Escoto B.A.:
Advanced Materials Division, IPICYT, Camino a la Presa San Jose 2055, San-Luis-Potosí 78216, Mexico
Zamudio A.:
Departamento de Física, CUCEI, U. de G., Blvd. Marcelino Garcia Barragan #1421, Guadalajara, Jal. 44430, Mexico
Silva-Pereyra H.G.:
Advanced Materials Division, IPICYT, Camino a la Presa San Jose 2055, San-Luis-Potosí 78216, Mexico
Robles-Avila E.:
Advanced Materials Division, IPICYT, Camino a la Presa San Jose 2055, San-Luis-Potosí 78216, Mexico
Terrones M.:
Department of Physics, Pennsylvania State University, University Park, PA 16802-6300, United States
Research Center for Exotic Nano Carbons (JST), Shinshu University, 4-17-1 Wakasato, Nagano City 380-8553, Japan
All Open Access; Bronze
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